<template>
	<div>
		<!-- 面包屑导航 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>商品管理</el-breadcrumb-item>
			<el-breadcrumb-item>参数列表</el-breadcrumb-item>
		</el-breadcrumb>
		<!-- 卡片 -->
		<el-card>
			<el-alert title="注意:只允许为第三级分类设置相关参数" type="warning" show-icon :closable="false">
			</el-alert>
			<!-- 选择商品 -->
			<div class="cat_opt">
				<span>选择商品分类：</span>
				<el-cascader expand-trigger="hover" v-model="selectCateKeys" :options="cateList" :props="cateProps" @change="handleChange">
				</el-cascader>
			</div>
			<!-- 标签页 -->
			<el-tabs v-model="activeName" @tab-click="handleClick">
			    <el-tab-pane label="动态参数" name="many">
						<el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible=true">添加参数</el-button>
						<!-- 参数表格 -->
						<el-table :data="manyTableData" border stripe>
							<el-table-column type="expand">
								<template slot-scope="scope">
									<el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleClose(i,scope.row)">{{item}}</el-tag>
									<el-input
									  class="input-new-tag"
									  v-if="scope.row.inputVisible"
									  v-model="scope.row.inputValue"
									  ref="saveTagInput"
									  size="small"
									  @keyup.enter.native="handleInputConfirm(scope.row)"
									  @blur="handleInputConfirm(scope.row)"
									>
									</el-input>
									<el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)" >+ New Tag</el-button>
								</template>
							</el-table-column>
							<el-table-column type="index"></el-table-column>
							<el-table-column label="参数名称" prop="attr_name"></el-table-column>
							<el-table-column label="操作">
								<template slot-scope="scope">
									<el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
									<el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParams(scope.row.attr_id)">删除</el-button>
								</template>
							</el-table-column>
						</el-table>
					</el-tab-pane>
			    <el-tab-pane label="静态参数" name="only">
						<el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible=true">添加参数</el-button>
						<!-- 属性表格 -->
						<el-table :data="onlyTableData" border stripe>
							<el-table-column type="expand">
								<template slot-scope="scope">
									<el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleClose(i,scope.row)">{{item}}</el-tag>
									<el-input
									  class="input-new-tag"
									  v-if="scope.row.inputVisible"
									  v-model="scope.row.inputValue"
									  ref="saveTagInput"
									  size="small"
									  @keyup.enter.native="handleInputConfirm(scope.row)"
									  @blur="handleInputConfirm(scope.row)"
									>
									</el-input>
									<el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)" >+ New Tag</el-button>
								</template>
							</el-table-column>
							<el-table-column type="index"></el-table-column>
							<el-table-column label="属性名称" prop="attr_name"></el-table-column>
							<el-table-column label="操作">
								<template slot-scope="scope">
									<el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
									<el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParams(scope.row.attr_id)">删除</el-button>
								</template>
							</el-table-column>
						</el-table>
					</el-tab-pane>
			  </el-tabs>
	</el-card>
	<!-- 添加参数 -->
	<el-dialog
	  :title="'添加' + titleText"
	  :visible.sync="addDialogVisible"
	  width="50%" @close="addDialogClosed">
	  <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
	    <el-form-item :label="titleText" prop="attr_name">
	      <el-input v-model="addForm.attr_name"></el-input>
	    </el-form-item>
		</el-form>
	  <span slot="footer" class="dialog-footer">
	    <el-button @click="addDialogVisible = false">取 消</el-button>
	    <el-button type="primary" @click="addParams">确 定</el-button>
	  </span>
	</el-dialog>
	<!-- 修改参数 -->
	<el-dialog
	  :title="'修改' + titleText"
	  :visible.sync="editDialogVisible"
	  width="50%" @close="editDialogClosed">
	  <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
	    <el-form-item :label="titleText" prop="attr_name">
	      <el-input v-model="editForm.attr_name"></el-input>
	    </el-form-item>
		</el-form>
	  <span slot="footer" class="dialog-footer">
	    <el-button @click="editDialogVisible = false">取 消</el-button>
	    <el-button type="primary" @click="editParams">确 定</el-button>
	  </span>
	</el-dialog>
	
	
	</div>
</template>

<script>
	export default {
		data() {
			return {
				cateList: [],
				selectCateKeys: [],
				cateProps: {
					value: 'cat_id',
					label: 'cat_name',
					children: 'children'
				},
				activeName:'many',
				manyTableData:[],
				onlyTableData:[],
				addDialogVisible:false,
				addForm:{
					attr_name:''
				},
				addFormRules:{
					attr_name:[
						{required:true,message:'请输入参数',trigger:'blur'}
					]
				},
				editDialogVisible:false,
				editForm:{
					attr_name:'',
					attr_id:''
				},
				editFormRules:{
					attr_name:[
						{required:true,message:'请输入参数',trigger:'blur'}
					]
				},
				
				
			}
		},
		created() {
			this.getCateList()
		},
		methods: {
			async getCateList() {
				const {
					data: res
				} = await this.$http.get('categories')
				if (res.meta.status !== 200) {
					this.$message.error("获取数据失败")
				} else {
					this.cateList = res.data
					// console.log(this.cateList)
				}
			},
			async handleChange() {
				this.getParamsData()
			},
			handleClick(){
				// console.log(this.activeName)
				this.getParamsData()
			},
			async getParamsData(){
				if(this.selectCateKeys.length!==3){
					this.selectCateKeys=[]
					this.manyTableData=[]
					this.onlyTableData=[]
				}else{
					const {data:res}=await this.$http.get(`categories/${this.cateId}/attributes`,{params:{sel:this.activeName}})
					
					res.data.forEach(item=>{
						item.attr_vals=item.attr_vals ? item.attr_vals.split(' ') :[],
						item.inputVisible=false
						item.inputValue=''
						// console.log(res.data)
					})
					if(res.meta.status!==200){
						this.$message.error("获取数据失败")
					}else{
						// console.log(res.data)
						if(this.activeName==='many'){
							this.manyTableData=res.data
						}else{
							this.onlyTableData=res.data
						}
					}
				}
			},
			addDialogClosed(){
				this.$refs.addFormRef.resetFields()
			},
			addParams(){
				this.$refs.addFormRef.validate(async valid=>{
					if(!valid) return 
					const {data:res}=await this.$http.post(`categories/${this.cateId}/attributes`,{attr_name:this.addForm.attr_name,
					attr_sel:this.activeName})
					console.log(res)
					if(res.meta.status!==201){
						this.$message.error("添加失败")
					}else{
						this.$message.success("添加成功")
						this.getParamsData()
						this.addDialogVisible=false
					}
				})
			},
			editDialogClosed(){
				this.$refs.editFormRef.resetFields()
			},
			async showEditDialog(attr_id){
				const {data:res}=await this.$http.get(`categories/${this.cateId}/attributes/${attr_id}`,{params:{attr_sel:this.activeName}})
				// console.log(res)
				if(res.meta.status!==200){
					this.$message.error("获取数据失败")
				}else{
					this.editForm=res.data
				}
				this.editDialogVisible=true
			},
			editParams(){
				this.$refs.editFormRef.validate(async valid=>{
					if(!valid) return
					const {data:res}=await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,{
						attr_name:this.editForm.attr_name,
						attr_sel:this.activeName
					})
					if(res.meta.status!==200){
						this.$message.error("修改失败")
					}else{
						this.$message.success("修改成功")
						this.getParamsData()
						this.editDialogVisible=false
					}
				})
			},
			async removeParams(attr_id){
				const confirmResult=await this.$confirm('此操作将永久删除该参数, 是否继续?', '提示', {
				          confirmButtonText: '确定',
				          cancelButtonText: '取消',
				          type: 'warning'
				        }).catch(err=>err)
								
								if(confirmResult!=='confirm'){
									return
								}else{
									const {data:res}=await this.$http.delete(`categories/${this.cateId}/attributes/${attr_id}`)
									if(res.meta.status!==200){
										this.$message.error("删除失败")
									}else{
										this.getParamsData()
									}
								}
								
			},
			async handleInputConfirm(row){
				if(row.inputValue.trim().length===0){
					row.inputVisible=false
					row.inputValue=''
					return
				}
					row.attr_vals.push(row.inputValue.trim())
					row.inputVisible=false
					row.inputValue=''
					this.saveAttrVals(row)
				
			},
			showInput(row){
				row.inputVisible=true
				this.$nextTick(_ => {
				          this.$refs.saveTagInput.$refs.input.focus()
				        })
			},
			async saveAttrVals(row){
				const {data:res}=await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,{
					attr_name:row.attr_name,
					attr_sel:row.attr_sel,
					attr_vals:row.attr_vals.join(' ')
					
				})
				if(res.meta.status!==200){
					this.$message.error("修改失败")
				}
				this.$message.success("修改成功")
			},
			handleClose(i,row){
				row.attr_vals.splice(i,1)
				this.saveAttrVals(row)
			}
			
			
		},
		computed:{
			isBtnDisabled(){
				if(this.selectCateKeys.length!==3){
					return true
				}else{
					return false
				}
			},
			cateId(){
				if(this.selectCateKeys.length==3){
					return this.selectCateKeys[2]
				}
				return null
			},
			titleText(){
				if(this.activeName=='many'){
					return '动态参数'
				}
				return '静态属性'
			}
		}
	}
</script>

<style>
	.cat_opt {
		margin: 15px 0;
	}
	.el-tag{
		margin: 10px;
	}
	.input-new-tag{
		width: 120px !important;
	}
</style>
